Composition of matter.



COATING 0R PLASTIC.

UNITED STATES PATENT OFFICE.

OSCAR RUSSELL, OF CHICAGO, ILLINOIS, ASSIGNOR OF TIIVO-THIRDS TO \VILLIAM Gr. USE AND PERCY M. EDWARDS, OF CHICAGO, ILLINOIS.

COMPOSITION OF MATTER.

SP EGIFIC ATION forming part of Letters Patent No. 714,039, dated November 18, 1 9J2.

Application filecl May 26, 1902. Serial No. 109,078. (No specimens.)

To all whom it may concern:

Be it known that I, OSCAR RUSSELL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Composition of Matter to be Used for Fireproofing Purposes, and particularly designed and adapted for fireprooting yarn, cord, and the like made from combustible vegetable fiber.

A primary object of the invention is to providoa composition of matter adapted for-fireprootlng cotton yarn used for covering insulated copper wire to be used as an electrical conductor to prevent the setting of fires from the crossing of electrical wires, which with the coverings now in common use is the source of frequent fires.

My composition consists of the following ingredients, combined in the following proportions, to wit: silicate of soda, by weight, twelve pounds,ivory blimy weight, one pound. These TITgI e'dIeIIFs' are treated and mixed in the following manner: The silicate of soda is dissolved in water enough water being used so that the so ution will be of about the thickness and consistency of thin mucilage. Before the solution of silicate of soda and ivory-black are mixed the ivor black is first thoroughly mixed with water until It forms a thick paste. The splpti on of silicate of soda and the ivory-blackpaste are then mixed by slowly pouring the silicate of soda upon the ivory-black paste, while at the same time stirring theivory-black paste vigorously, the resulting product being a black liquid of about the consistency of ordinary paint.

In practice I have used a low grade of ivoryhlack known commercially as Swedish black.

\ lhe proportions of the ingredients of my improved composition of matter may be varied within limits; but I have derived the best results from and prefer to use the proportions stated above.

In fireproofing cotton yarn and the like by means of my improved composition of mat ter the yarn is saturated with the solution either byimmersing it in the solution or otherwise applying the solution thereto. For the purpose of fireproofing wood and the like my improved composition of matter may be applied thereto by means of a brush in the same manner as ordinary paint.

I claim- I. The herein-described composition of matter consisting of silicate of soda and ivoryblack, substantially as described.

2. The herein-described composition of matter for fireproofing purposes, consisting of silicate of soda, twelve (12) pounds and ivory-black one (1) pound, combined in the manner described,substantiallyas described.

In testimony that I claim the foregoing as my invention I affix mysignature, in presence of two subscribing witnesses, this 22d day of May, A. D. 1902.

OSCAR RUSSELL.

Witnesses:

HENRY JOHNSON, DENA LINDSAY. 

